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Table 3
Comparison of fitting curve errors between sixth-order weighted least squares fit and sixth-order least squares fit.
| Experimental flow points (L/h) | Sixth-order least squares fitting/% | Sixth-order weighted least squares fitting/% | Display value error/% | Deviations from the sixth-order least squares fitting/% | Deviations from the sixth-order weighted least squares fitting/% |
|---|---|---|---|---|---|
| 0.025 | 0.367 | 0.344 | 0.133 | +0.234 | +0.211 |
| 0.400 | 0.333 | 0.321 | 0.217 | +0.116 | +0.104 |
| 0.900 | 0.345 | 0.347 | 0.370 | –0.025 | –0.023 |
| 1.800 | 0.820 | 0.840 | 0.833 | –0.013 | +0.007 |
| 2.500 | 1.030 | 1.015 | 1.020 | 0.010 | –0.005 |
| 3.125 | 1.471 | 1.482 | 1.480 | –0.009 | +0.002 |
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